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Marginal wood fern · Dryopteris marginalis

Why are the fronds on my Marginal wood fern curling?

It is less common for this fern to have curling leaves, which usually means the plant is struggling with low humidity or underwatering. Check the soil moisture level first.

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curling leaves on a plant
Photo: Freshclover, CC BY-SA 4.0

Check these first

  1. Feel the soil to see if it is dry.
  2. Check the humidity levels in the room.
  3. Look for signs of pests that might be causing stress.

Likely causes

  1. Low humidity

    Possible

    How to tell: The edges of the fronds will curl inward and may turn crispy. This is common in dry indoor air during the winter.

    What to do: Place the pot on a tray filled with pebbles and water to boost local humidity. You can also group it with other plants to create a microclimate.

  2. Underwatering

    Possible

    How to tell: The entire frond will curl and lose its vibrant green color. The soil will feel dry and pull away from the edges of the pot.

    What to do: Soak the root ball thoroughly by placing the pot in a basin of water for 20 minutes. Ensure the soil is moist but not sitting in standing water.

Curling leaves on other plants

Find out what's wrong with your marginal wood fern

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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When to worry

Worry if the curling is accompanied by browning or crispy edges. It is normal for new fronds to be tightly curled as they unfurl.

Stopping it coming back

Keep the soil consistently moist and maintain humidity above 50 percent. Avoid placing the fern near heating vents or drafty windows.

Marginal wood fern: curling leaves? Check yours with a photo

Every plant is a little different. Take a photo of your marginal wood fern and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

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Questions people ask

Should I mist my fern to stop the curling?
Misting provides only temporary relief and can lead to fungal issues. A pebble tray or a humidifier is a much better long term solution.
Is my fern dying if the fronds are curled?
Not necessarily, it is likely just stressed. Adjust your watering and humidity, and the plant should recover within a few weeks.

Guides to these causes

More problems with Marginal wood fern

Back to the Marginal wood fern guide

This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.